如果有人可以引导我完成整个过程，那将是非常有帮助的，我曾经尝试过事件结构，但没有那么大帮助！
我仍然不愿意理解您的很多知识，但是我还是无法理解您，我对aws完全陌生。
我经历了事件结构，它说您将在此处找到配置ID “ configurationId”：“在存储桶通知配置中找到ID” 但是我不能
我对
的了解仍然很少“ x-amz-request-id”：“ Amazon S3生成的请求ID”，
“ x-amz-id-2”：“处理请求的Amazon S3主机”
from __future__ import print_function
import boto3
from decimal import Decimal
import json
import urllib
print('Loading function')
rekognition = boto3.client('rekognition')
iot = boto3.client('iot-data')
# --------------- Helper Functions to call Rekognition APIs ------------------
def compare_faces(bucket, key, key_target, threshold=90):
response = rekognition.compare_faces(
SourceImage={
"S3Object": {
"Bucket": 'dacsup',
"Name": 'obama.jpg',
}
},
TargetImage={
"S3Object": {
"Bucket": 'targetts',
"Name": 'obama2.jpg',
}
},
SimilarityThreshold=threshold,
)
return response['SourceImageFace'], response['FaceMatches']
# --------------- Main handler ------------------
def lambda_handler(event, context):
print("Received event: " + json.dumps(event, indent=2))
bucket = event['Records'][0]['s3']['bucket']['name']
key = urllib.unquote_plus(event['Records'][0]['s3']['object']['key'].encode('utf8'))
key_target = "targetts/" + key
try:
response = compare_faces(bucket, key, key_target)
print(response)
mypayload = json.dumps(response)
iotResponse = iot.publish(
topic="rekognition/result",
qos=1,
payload=mypayload)
print(iotResponse)
return iotResponse
print(response)
return response
except Exception as e:
print(e)
print("Error processing object {} from bucket {}. ".format(key, bucket) +
"Make sure your object and bucket exist and your bucket is in the same region as this function.")
raise e
--------------------------- event ------------------
{
"Records": [
{
"eventVersion": "2.1",
"eventTime": "2019-02-08T11:49:26.471Z",
"requestParameters": {
"sourceIPAddress": "My ip"
},
"s3": {
"configurationId": "----------------",
"object": {
"eTag": "99b7ce351fec8c0e7b30fd194a8c81b3",
"sequencer": "-----------",
"key": "obama.jpg",
"size": 5908
},
"bucket": {
"arn": " arn:aws:s3:::bucketname",
"name": " dacsup ",
"ownerIdentity": {
"principalId": "Mypprincipalid"
}
},
"s3SchemaVersion": "1.0"
},
"responseElements": {
"x-amz-id-2": "-------------",
"x-amz-request-id": "-----------"
},
"awsRegion": " us-east-2",
"eventName": "ObjectCreated:Put",
"userIdentity": {
"principalId": "myrincipalid"
},
"eventSource": "aws:s3"
}
]
}
错误-------------------------------- xxxxxxxxx ----------------- -------
START RequestId: 24820efa-d454-4ae4-9c49-e2eedd1c96ce Version: $LATEST
Received event: {
"Records": [
{
"eventVersion": "2.1",
"eventTime": "2019-03-04T11:49:26.471Z",
"requestParameters": {
"sourceIPAddress": "My ip"
},
"s3": {
"configurationId": "",
"object": {
"eTag": "99b7ce351fec8c0e7b30fd194a8c81b3 ",
"key": "obama.jpg",
"sequencer": "0A1B2C3D4E5F678901 ",
"size": 5908
},
"bucket": {
"ownerIdentity": {
"principalId": "My pid"
},
"name": " dacsup ",
"arn": " arn:aws:s3:::dacsup "
},
"s3SchemaVersion": "1.0"
},
"responseElements": {
"x-amz-id-2": "",
"x-amz-request-id": ""
},
"awsRegion": " us-east-2",
"eventName": "ObjectCreated:Put",
"userIdentity": {
"principalId": "pid"
},
"eventSource": "aws:s3"
}
]
}
An error occurred (InvalidS3ObjectException) when calling the CompareFaces operation: Unable to get object metadata from S3. Check object key, region and/or access permissions.
Error processing object obama.jpg from bucket . Make sure your object and bucket exist and your bucket is in the same region as this function.
An error occurred (InvalidS3ObjectException) when calling the CompareFaces operation: Unable to get object metadata from S3. Check object key, region and/or access permissions.: InvalidS3ObjectException
Traceback (most recent call last):
File "/var/task/lambda_function.py", line 59, in lambda_handler
raise e
InvalidS3ObjectException: An error occurred (InvalidS3ObjectException) when calling the CompareFaces operation: Unable to get object metadata from S3. Check object key, region and/or access permissions.
END RequestId: 24820efa-d454-4ae4-9c49-e2eedd1c96ce
REPORT RequestId: 24820efa-d454-4ae4-9c49-e2eedd1c96ce Duration: 372.53 ms Billed Duration: 400 ms Memory Size: 128 MB Max Memory Used: 67 MB
答案 0 :(得分：1)
这是Event message structure的当前版本。您提到的所有字段都在这里。
{
"Records":[
{
"eventVersion":"2.1",
"eventSource":"aws:s3",
"awsRegion":"us-west-2",
"eventTime":The time, in ISO-8601 format, for example, 1970-01-01T00:00:00.000Z, when Amazon S3 finished processing the request,
"eventName":"event-type",
"userIdentity":{
"principalId":"Amazon-customer-ID-of-the-user-who-caused-the-event"
},
"requestParameters":{
"sourceIPAddress":"ip-address-where-request-came-from"
},
"responseElements":{
"x-amz-request-id":"Amazon S3 generated request ID",
"x-amz-id-2":"Amazon S3 host that processed the request"
},
"s3":{
"s3SchemaVersion":"1.0",
"configurationId":"ID found in the bucket notification configuration",
"bucket":{
"name":"bucket-name",
"ownerIdentity":{
"principalId":"Amazon-customer-ID-of-the-bucket-owner"
},
"arn":"bucket-ARN"
},
"object":{
"key":"object-key",
"size":object-size,
"eTag":"object eTag",
"versionId":"object version if bucket is versioning-enabled, otherwise null",
"sequencer": "a string representation of a hexadecimal value used to determine event sequence,
only used with PUTs and DELETEs"
}
},
"glacierEventData": {
"restoreEventData": {
"lifecycleRestorationExpiryTime": "The time, in ISO-8601 format, for example, 1970-01-01T00:00:00.000Z, of Restore Expiry",
"lifecycleRestoreStorageClass": "Source storage class for restore"
}
}
}
]
}